diff options
Diffstat (limited to 'aclocal.m4')
| -rw-r--r-- | aclocal.m4 | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/aclocal.m4 b/aclocal.m4 index 20db44fa592b..aa0b4d20eb28 100644 --- a/aclocal.m4 +++ b/aclocal.m4 @@ -256,7 +256,7 @@ AC_DEFUN(AC_LBL_SHLIBS_INIT, sparc64*) case "$host_os" in - freebsd*) + freebsd*|openbsd*) PIC_OPT=-fPIC ;; esac @@ -458,7 +458,22 @@ dnl Check for flex, default to lex dnl Require flex 2.4 or higher dnl Check for bison, default to yacc dnl Default to lex/yacc if both flex and bison are not available -dnl Define the yy prefix string if using flex and bison +dnl +dnl If we're using flex and bison, pass -P to flex and -p to bison +dnl to define a prefix string for the lexer and parser +dnl +dnl If we're not using flex and bison, don't pass those options +dnl (as they might not work - although if "lex" is a wrapper for +dnl Flex and "yacc" is a wrapper for Bison, they will work), and +dnl define NEED_YYPARSE_WRAPPER (we *CANNOT* use YYBISON to check +dnl whether the wrapper is needed, as some people apparently, for +dnl some unknown reason, choose to use --without-flex and +dnl --without-bison on systems that have Flex and Bison, which +dnl means that the "yacc" they end up using is a wrapper that +dnl runs "bison -y", and at least some versions of Bison define +dnl YYBISON even if run with "-y", so we end up not compiling +dnl the yyparse wrapper and end up with a libpcap that doesn't +dnl define pcap_parse()) dnl dnl usage: dnl @@ -510,6 +525,8 @@ AC_DEFUN(AC_LBL_LEX_AND_YACC, if test "$$1" = flex -a -n "$3" ; then $1="$$1 -P$3" $2="$$2 -p $3" + else + AC_DEFINE(NEED_YYPARSE_WRAPPER,1,[if we need a pcap_parse wrapper around yyparse]) fi]) dnl |